Erysiphe polygoni
DC.
KW [Darwin] 51572. Place of collection: Ukraine; Poltava Oblast; Lubny District; Pisky village; Sula river (side) (N50°01' E33°04'). Date of collection: 18 July 1989. Associated organism: Polygonum sp. (leaf). Collector: Burdyukova, L.I.. Identifier: Heluta, V.P..